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DERRINGER

A generic term referring to many variations of pocket-sized pistols. The name comes from the pistol's original designer, Henry Derringer. Note: According to the American Derringer Company, Henry Deringer's name is spelled with one 'R.' The proper spelling of Derringer firearms is with two 'R's.

DISCHARGE

To cause a firearm to fire.

DOUBLE BARREL

Two barrels on a firearm mounted to one frame. The barrels can be vertically (over-under) or horizontally (side-by-side) aligned.

DUMDUM

See BULLET; DUMDUM

FIREARM

An assembly of a barrel and action from which is projectile is propelled as a result of combustion.

FIRING PIN

The part of a firearm that strikes the primer cartridge to start the ignition of the primer.

FLASH SUPPRESSOR

An attachment to the muzzle designed to reduce muzzle flash. Note: A flash suppressor is not a silencer.

FULL COCK

The position of the hammer when the firearm is ready to fire.